Which of the following expression is a rational expression

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.